Tamil Nadu Minerals

What Tamil Nadu Minerals does

Tamil Nadu Minerals Limited (TAMIN) is a Government of Tamil Nadu state undertaking founded in 1978, engaged in the exploration, mining, exploitation, processing, and marketing of granite and other minerals. Headquartered in Chennai at No. 31, Kamarajar Salai, Chepauk, TAMIN controls 67 owned granite quarries and 118+ captive granite leases across Tamil Nadu, supported by three granite processing units — most notably a 100% export-oriented slab processing unit in Melur, Madurai District (180,000 sq mtr/annum capacity) and a 100% export-oriented tiles plant in Krishnagiri (37,500 sq mtr capacity). The company also operates specialized mineral assets: a graphite mine and beneficiation unit at Sivagangai producing 30% of India's graphite output, a silica sand processing unit at Ennore that is the only BIS-authorized producer of Indian Standard Sand for cement industry quality testing, a limestone mine at Ariyalur, and a vermiculite exfoliation facility at Sevathur. The board is staffed by serving IAS officers, government department heads, and academic experts from IIT Dhanbad and IIM Pudukkottai, reflecting its public-sector character.

The product portfolio centers on dimensional granite raw blocks and finished granite products (sawn, polished, and leather-finished slabs, calibrated tiles, random building slabs, wall panels, and monuments) in 30+ color varieties, complemented by graphite, Indian Standard Sand, limestone, vermiculite, quartz, fireclay, and laterite. Technology is conventional mining and stone processing — diamond saw cutting, wire saw cutting, and modern beneficiation — with no AI/ML, software, or digital product surface. TAMIN's go-to-market is direct B2B enterprise sales: international buyers place orders via website enquiry forms and buyer registration, while domestic mineral sales flow through the Government of Tamil Nadu e-Procurement portal (tntenders.gov.in) and the MSTC e-auction portal (www.mstcecommerce.com). Export channels reach buyers across Europe, the Middle East, Japan, China, Australia, UK, Switzerland, Holland, USA, and Germany. Pricing is not publicly disclosed and is quote-based per enquiry.

The revenue model is commodity sales of physical minerals and stone: one-time transactions for granite blocks and slabs (export and domestic), mineral sales via government auctions, and the regulated monopoly supply of BIS-certified Indian Standard Sand. The company claims 16,000+ customers worldwide and 45+ years of brand reputation. As a state PSU under the Natural Resources Department with no external equity, no funding rounds, no M&A activity, and an 11-50 reported employee headcount, TAMIN operates as a stable but capital-constrained government enterprise whose growth is tied to commodity cycles, quarry lease renewals, and state-level policy rather than private-market capital deployment.

Name

Tamil Nadu Minerals

Legal name

Tamil Nadu Minerals Limited

Website

https://tamingranites.com

Company type

Private

Founded year

1978

Operating status

Operating

Headcount range

11–50 employees

Short description

Tamil Nadu Minerals Limited (TAMIN) is a Government of Tamil Nadu undertaking founded in 1978 that mines, processes, and markets granite and other minerals (graphite, Indian Standard Sand, limestone, vermiculite) from 67 owned quarries, supplying export buyers across 10+ countries and domestic cement factories.

Ownership category

akta.pro rank

Product category

Industrial Minerals and Dimensional Stone

NAICS

Nonmetallic Mineral Mining and Quarrying (2123), Sand, Gravel, Clay, and Ceramic and Refractory Minerals Mining and Quarrying (21232), Industrial Sand Mining (212322)

SIC

Mining & Quarrying Of Nonmetallic Minerals (No Fuels) (1400), Cut Stone & Stone Products (3281)

akta.pro primary industry

Granite Quarrying & Dimension Stone Fabrication (IMAKAHAD)

akta.pro secondary industries

Silica & Quartz Mining (Industrial Silica Sand, High-Purity Quartz) (IMAKAGAK), Limestone Quarrying (Industrial & Construction Grade) (IMAKAHAC)

Keywords

• Granite mining
• Mineral processing
• Dimensional stone
• Stone quarrying
• Industrial minerals

Headquarters

HQ city

Chennai

HQ country

India

HQ region

Asia

Offices7 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Operations, Supply Chain, Infrastructure, Personnel, Marketing or Sales

Revenue model

1. Granite Products: Extraction, processing and sale of granite raw blocks, slabs, tiles, monuments, and dimensional granite products for export and domestic markets
2. Mineral Products: Mining and sale of other minerals including Graphite, Limestone, Indian Standard Sand, Vermiculite, Quartz, Fire Clay and Laterite
3. Indian Standard Sand: Exclusive authorized supplier of BIS-certified Indian Standard Sand for quality testing by cement factories across India

Go-to-market motion1 record

Distribution channels5 records

Marketing channels5 records

Core offering

Tamil Nadu Minerals Limited (TAMIN) is a Government of Tamil Nadu undertaking that explores, mines, processes, and markets granite and other industrial minerals. It operates 67 owned granite quarries and three processing units producing raw granite blocks, polished slabs, calibrated tiles, and monuments for export and domestic markets. It is also the only BIS-authorized supplier of Indian Standard Sand for cement quality testing across India.

Product overview

Tamil Nadu Minerals Limited (TAMIN) is a Government of Tamil Nadu undertaking engaged in exploration, mining, exploitation, processing, and marketing of granite and other minerals. Founded in 1978, TAMIN operates 67 granite quarries and owns three granite processing units in Madurai (Melur) and Krishnagiri. The product portfolio centers on Granite Raw Blocks and Finished Products (slabs, tiles, monuments), complemented by other minerals including Graphite (producing 30% of India's output), Limestone, Indian Standard Sand (the only BIS-authorized producer in India), Vermiculite, Quartz, and Fireclay & Laterite. TAMIN's granite processing units produce sawn, polished, and leather-finished slabs and tiles with a combined installed capacity of approximately 1,837,500 square meters per annum. The company exports dimensional blocks and finished granite products to Europe, Middle East, Japan, China, USA, Australia, UK, Switzerland, and Germany.

Differentiator

Problem solved

Functional benefit

Products and services

• Granite Raw Blocks Dimensional granite blocks extracted from TAMIN's 67 owned quarries across Tamil Nadu, offering 30+ colors and patterns demanded by European and USA markets for countertops, flooring, and decorative elements.
• Granite Finished Products Finished and semi-finished granite products including polished slabs, calibrated tiles, random building slabs, wall panels, and monuments produced at three granite processing units using sawn, polished, and leather finishes.
• Graphite Graphite mined and processed at the Sivagangai graphite flakes processing and beneficiation unit, contributing 30% of India's graphite production.
• Indian Standard Sand BIS-certified Indian Standard Sand produced at the Ennore silica sand processing unit, supplied to cement factories across India for quality testing. TAMIN is the only BIS-authorized producer.
• Limestone Sedimentary limestone mined from a 12.74-hectare mine in Ariyalur District, composed primarily of calcium carbonate.
• Vermiculite Exfoliated vermiculite produced at the Sevathur facility in Thirupathur District for industrial applications.
• Quartz Quartz mineral extracted from TAMIN's mining operations for industrial use.
• Fireclay & Laterite Fireclay and laterite minerals extracted from TAMIN's mining operations for industrial applications.

Quantifiable outcome

• 30% of India's Graphite production from Sivagangai unit
• +3 more outcomes

Named customers3 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators10 records

Recent moves7 records

Expansion highlights4 records

Direct peers

• Graphite India Limited: India's largest graphite electrode and graphite product manufacturer, producing natural and synthetic graphite. Comparable to TAMIN's Sivagangai graphite operations as a domestic Indian graphite producer serving industrial end markets.
• Rashi Granite Exports Limited: India-based granite processor and global exporter of granite slabs, tiles, and monuments from captive and leased quarries. Closely comparable business model to TAMIN's granite division, with B2B export focus.
• Classic Marble Company (Regatta Granites India): Indian marble and granite processor selling finished surfaces under its own brand to domestic and international buyers. Comparable value-chain position in natural stone processing and export, with stronger brand-led positioning than TAMIN.
• Universal Granimarmo Group: Indian granite processor with captive quarries in Rajasthan and South India, exporting dimensional granite blocks and finished products globally. Comparable business model with focus on granite block supply and processing for international buyers.
• Pokarna Limited: Indian processor and exporter of granite and engineered stone products, with substantial captive quarry holdings in Andhra Pradesh and Telangana. Comparable as a privately held Indian granite exporter serving global markets with raw blocks and finished slabs.

Broad incumbents

• Caesarstone Ltd. Israeli-headquartered global manufacturer of engineered quartz surfaces, distributed in the US, Europe, and Asia. Comparable as a global branded incumbent in premium stone surfaces that competes with natural granite for the same countertop and architectural specifications.
• Cosentino Group: Spanish global leader in engineered quartz (Silestone) and natural stone surfaces, selling branded finished products to construction and consumer markets worldwide. Comparable as a global competitor in the broader stone/countertop category serving the same end customers.
• Sibelco: Belgian-headquartered global leader in industrial minerals including silica sand, nepheline, and ball clays, operating worldwide. Comparable as a major industrial sand and mineral processor whose scope includes the same commodity categories TAMIN produces (silica sand, quartz, refractory minerals).

Regional players

• NMDC Limited: Indian central government public sector undertaking and one of the world's largest iron ore producers. Comparable as a state-owned Indian mining PSU with diversified mineral operations and significant export orientation, though focused on metallic rather than industrial minerals.

Emerging players

• Tirupati Carbons & Chemicals: Indian graphite and carbon-based products manufacturer serving foundry, battery, and specialty chemical markets. Comparable as a domestic Indian graphite competitor to TAMIN's Sivagangai unit, though smaller and more focused on processed graphite rather than raw flake production.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/watch?v=tF6InDAt2Vk

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Tamil Nadu Minerals